The
Electro-Brite Electroless Copper 2060 Process is a reliable and economical
process designed for multilayers as well as conventional double sided PTH
boards.

Solution makup

Electro-Brite 2060 A

7% by volume

Electro-Brite 2060 M*

8.5% by volume

Formaldehyde 37% by weight

0.22% by volume

Deionized Water

Balance

*2060 M is used only on make-up. Bath is replenished
with2060 A and 2060 B (or 2060 BXX).

Operating conditions

Nominal

Range

Electro-Brite 2060 A

100% (2.5 g/L Cu)

80 - 120% (2.0 - 3.0 g/L Cu)

Electro-Brite 2060 B (or 2060 BXX)

100% (10.0 g/L NaOH)

80 - 120% (8.0 - 12.0 g/L NaOH)

Formaldehyde

100% (5.9 g/L)

80 - 120% (4.8 - 7.0 g/L)

Temperature

24°C (75°F)

21 - 27°C (70 - 80°F)

Time

70 microinches (1.75 microns) in 30
minutes.

Agitation

Air is required. Mechanical is
recommended.

Filtration

To remove particles over 5 microns.

Bath Loading

0.5 - 2.0 surface ft.2/gal. (1.2 -
4.9 dm2/ liter)

Recommended process cycle

Cleaner/Conditioner ML-371

Rinse

10% sulfuric acid dip

Rinse

CO-BRA ETCH® or Cu Prep II

Rinse

Pre-Dip PD-472

Catalyst C-473

Rinse

Rinse

Accelerator A-676

Rinse

Electroless Copper 2060

Rinse

10% sulfuric acid dip

Rinse

Copper Inhibitor L.D. III (optional)

Rinse (optional)

Dry

Bath operation and maintenance

Maintenance can be based upon
square feet processed or upon wet analysis using analytical procedures included
at the end of this data sheet.

Maintenance replenishment based on work
load (required for production following initial start-up additions):

Surface Area

2060 A

2060 B (or BXX)

1.0 sq. ft. for 30 minutes

26 mL

17 mL

1.0 sq. ft. for 20 minutes

19 mL

13 mL

The bath should be analyzed and adjusted daily. To
maintain the solution level, remove a volume of bath equal to the volume of
Electro-Brite 2060 A and Electro-Brite 2060 B to be
added.]Replenishment based upon analysis results:

To raise concentration of copper by 10% add 26.5 mL/gal
of 2060 A. Make this addition before analyzing for 2060 B or BXX and
formaldehyde.

A 10% add of 2060 A decreases the 2060 B (BXX)
concentration by 5%. (After adding the 2060 A, analyze for the 2060 B
concentration.)

To raise concentration of formaldehyde by 10%
add 5.7 ml/gal of 37% formaldehyde.

Inactive
Periods

1.

The bath should be stored at 80% or less make
up concentration overnight or weekends.

2.

The bath should be filtered into a clean tank
periodically to maintain bath life and stability.

3.

To start the bath, analyze and adjust to
optimum.

Equipment

Tanks should be made on polypropylene, high density
polyethylene or glass.

Racks should be constructed of type 316
stainless steel, polypropylene, polyethylene or PVC. Boards should be racked
vertically and angles 5 - 10 degrees to permit solution flow through the holes.

Heaters should be made of quartz or Teflon®.

Work bar agitation of the rack during the plating cycle is recommended.
A 3 - 5 inch stroke agitating at 15 - 25 cycles/minute is adequate.

Constant air agitation is required. The air must be supplied by a
blower: DO NOT USE COMPRESSED AIR.

Continuous filtration is recommended
to prevent particles from settling on the work and causing roughness. The
solution should be turned over 5 - 8 times per hour through a 3 - 10 micron
polypropylene filter.

Waste Treatment

Neutralize the
clear, colorless liquid for disposal as required by local authorities.

Safety

Electro-Brite 2060 A contains copper salts and
reducing agents and should not be mixed with oxidizing agents. Avoid
breathing vapor and contact with skin, eyes, and clothing. In case of contact,
immediately flush skin and eyes with copious amounts of water for at least 15
minutes. For eyes, get immediate medical attention. Do not store near heat
or in direct sunlight. Flush all spills with water. Do not take internally.
Electro-Brite 2060 B (or 2060 BXX) and 2060 M are strongly alkaline. Avoid
eye, skin, and oral contact. Wear goggles, rubber gloves and protective
clothing. In case of contact, immediately flush skin and eyes with copious
amounts of water for at least 15 minutes For eyes, get immediate medical
attention.

Electro-Brite Electroless Copper 270

Product Description

Electro-Brite Electroless Copper 270 is
an extremely stable electroless copper process yielding a medium thickness
deposit. Its fine grain structure provides an excellent defense against
multilayer defects as well as positioning it at the top of the line for
double-sided work. In addition, its formulation was oriented specifically
toward eliminating small hole voiding problems commonly associated with
electroless copper.

TThis stable bath is user-friendly and requires no
morning dummy racks or special nightly shutdown procedures, and can be dropped
into any line containing Electrochemicals' pre-plating chemistry.

Bath operation and maintenance

Maintenance and replenishment can be based on square feet of work
processed or by the analytical control. (Procedures are included at the end of
the data sheet.)

Replenishment based on workload: The following
additions are based on an average plating rate of 65 microinches of copper per
30 minutes. Replenishment should be made either continually or at regular
intervals in order to maintain the bath components within range. Although these
additions will keep the bath near operating parameters during average plating
times, full analysis should be done periodically to ensure proper component
concentrations, which can vary with workload and bath age.

Surface Area

270 A

270 B

1.0 sq. ft. for 30 minutes

26 mL

17 mL

1.0 sq. ft. for 20 minutes

19 mL

11 mL

Before making additions, remove the total addition
volume (270 A plus 270 B.) Because of evaporation, water may need to be added
throughout the day to maintain level.

A precipitate will form when the
Electro-Brite Copper 270 A is added to the bath. For this reason the
concentrate should be added into the inlet of the recirculation system or to
the weir overflow tank.

Replenishment via an automatic controller:
If a controller is used to monitor copper and make adds, it should be
connected to another pump that will bail out the total volume added. Set the
flow of the pumps to the following ratio: .]

270 A

270 B

Bail Out

1.0

0.667

1.667

Morning Replenishment:

After a nightly or weekend shutdown,
the formaldehyde and caustic concentrations will be lower than optimal.

Analyze the 270 A concentration using the procedure included at the end
of the data sheet and use the following chart to make the add. Do this before
analyzing the caustic and formaldehyde concentrations. Add the required amount
of 270 A. Remember to first bail out whatever volume is to be added to the
bath.

After adding the required 270 A volume, analyze the caustic and
formaldehyde concentrations. To raise the caustic level, add 270 B, and to
raise the formaldehyde level, add formaldehyde.

To raise:

By:

Add:

270 A

10% (0.25 g/L)

26.5 ml/gal of 270 A

270 B

10% (0.70 g/L)

14.1 ml/gal of 270 B

Formaldehyde

10% (0.40 g/L)

4.25 ml/gal of Formaldehyde (37%)

A 10% add of 270 A increases the formaldehyde
concentration by 8.5% by volume.

A 10% add of 270 A decreases the 270 B
concentration by 5%. (After adding the 270 A, analyze for the 270 B
concentration.)Inactive Periods

Make no further replenishment after the last load of
production. There is no need to dummy the chemistry down, but a manual
replenishment after the last load is unnecessary.

Cool the bath to ambient temperature. Once cooled, minimal
plate out should occur. Continue mild air agitation.

The bath should be filtered into a clean tank once a week to
maintain bath life and stability.

To start the bath, analyze and adjust all components back to
optimum conditions.

Equipment

Tanks should be made of polypropylene or
high-density polyethylene. An overflow weir is preferred.

Racks should
be constructed of type 316 stainless steel, polypropylene, polyethylene or PVC.
Boards should be racked vertically and angled 5 - 10 degrees to permit solution
flow through the holes.

Heaters should be made of quartz or
Teflon®.

Work bar agitation of the rack during the
plating cycle is recommended. A 3 - 5 inch stroke agitating at 15 - 25
cycles/min. is adequate. A solution sparger aimed at the tank bottom can also
be utilized for additional agitation.

Constant mild air agitation is
recommended. The air must be supplied by a blower; do not use compressed air.

Continuous filtration is required to prevent particles from
settling on the work and causing roughness. A weir overflow with a 25 micron
filter bag is recommended.

Waste treatment

Dispose of
solutions and precipitate in accordance with all applicable Federal, state, and
local regulations.

Equipment

Tanks should be made on polypropylene, high density
polyethylene or glass.

Racks should be constructed of type 316
stainless steel, polypropylene, polyethylene or PVC. Boards should be racked
vertically and angles 5 - 10 degrees to permit solution flow through the holes.

Heaters should be made of quartz or Teflon®.

Work bar agitation of the rack during the plating cycle is recommended.
A 3 - 5 inch stroke agitating at 15 - 25 cycles/minute is adequate.

Constant air agitation is required. The air must be supplied by a
blower: DO NOT USE COMPRESSED AIR.

Continuous filtration is recommended
to prevent particles from settling on the work and causing roughness. The
solution should be turned over 5 - 8 times per hour through a 3 - 10 micron
polypropylene filter.